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M ASTR 'PehMMdl Owm TWO-WAV RADIO
PROGRESS LINE
All controls except the push-to-talk switch and the high-low power switch
are mounted on the top surface of the unit.
A. Push-to-talk switch
B. High-low power switch to extend
battery life
C. Collapsible antenna
D. Squelch control
E. Option/Accessory jack
F. On-Off/Volume control
G. Frequency selector (4 position)
H. Speaker and Microphone
One rechargeable battery is used for all
power requirements. However, six stan
dard “C” cells will work without wiring
modification or adapters. Battery life on the
rechargeable nickel-cadmium battery,
based on a standard EIA duty cycle of 10%
transmit, 10% receive and 80% standby is
10 hours per charge on high band and 12
hours on UHF. On a 5% transmit, 5% re
ceive and 90% standby duty cycle, battery
life is over 20 hours per charge on both
VHF and UHF models.
The 71/2 volt General Electric-built nickel
cadmium battery has been specially de
signed to accept either a fast or slow
charge. It is the only battery available with
built-in protection. Should a charger mal
function, the battery is protected by a re
placeable fuse that interrupts the charge.